cairoScaledFontGlyphExtents: cairoScaledFontGlyphExtents

In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description

Gets the extents for a list of glyphs. The extents describe a user-space rectangle that encloses the "inked" portion of the glyphs, (as they would be drawn by cairoShowGlyphs if the cairo graphics state were set to the same font_face, font_matrix, ctm, and font_options as scaled.font). Additionally, the x_advance and y_advance values indicate the amount by which the current point would be advanced by cairoShowGlyphs.

Usage

cairoScaledFontGlyphExtents(scaled.font, glyphs, num.glyphs)

Arguments

scaled.font	[CairoScaledFont] a CairoScaledFont
glyphs	[CairoGlyph] a list of glyph IDs with X and Y offsets.
num.glyphs	[integer] the number of glyphs in the glyphs list

Details

Note that whitespace glyphs do not contribute to the size of the rectangle (extents.width and extents.height).

Value

A list containing the following elements:

extents

[CairoTextExtents] a CairoTextExtents which to store the retrieved extents.

Author(s)

Derived by RGtkGen from GTK+ documentation

RGtk2 documentation built on Oct. 14, 2021, 5:08 p.m.